﻿/*
 * Copyright (c) <2012> <guangboo49@gmail.com>
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this 
 * software and associated documentation files (the "Software"), to deal in the Software 
 * without restriction, including without limitation the rights to use, copy, modify, merge, 
 * publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons 
 * to whom the Software is furnished to do so, subject to the following conditions: 
 * The above copyright notice and this permission notice shall be included in all copies or 
 * substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING 
 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/

using System;
using System.Collections.Generic;
using System.Text;

namespace Optparse {
    public class OptionGroup : IEnumerable<IArgOption> {
        public IList<IArgOption> Options { get; private set; }
        public string Title { get; set; }
        public string Description { get; set; }
        public int Count { get { return this.Options.Count; } }

        public OptionGroup(string title) : this(title, string.Empty) { }
        public OptionGroup(string title, string description) {
            if (string.IsNullOrEmpty(title))
                throw new ArgumentNullException("title", "The parameter title must not be null.");

            this.Options = new List<IArgOption>();
            this.Title = title;
            this.Description = description;
        }
        
        public void AddOption(IArgOption option) {
            this.Options.Add(option);
        }

        public void RemoveOption(IArgOption option) {
            this.Options.Remove(option);
        }

        public IEnumerator<IArgOption> GetEnumerator() {
            return this.Options.GetEnumerator();
        }

        System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator() {
            return this.Options.GetEnumerator();
        }
    }
}
